ASTROSAT CZTI

Data Quality Report

Orbit 04469

Creation date: 2024-06-27T14:42:26.244793
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G05_253T01_9000000560_04469cztM0_level2.evt modeM0/AS1G05_253T01_9000000560_04469cztM0_level2_quad_clean.evt
Size (bytes)2,314,500,480371,027,520
Size2.2 GB 353.8 MB
Events in quadrant A16,344,1472,249,730
Events in quadrant B17,625,2082,227,559
Events in quadrant C15,976,2402,248,637
Events in quadrant D17,838,9942,161,491

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07004
B07002
C07002
D07002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0411
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073532497
B076034381
C072404398
D078472451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A341813661.070770%
B341924061.187412%
C341991090.318723%
D341985761.684309%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 38488 34368 135 135 0.35% 0.39%
B 38488 34367 121 121 0.31% 0.35%
C 38488 34367 29 29 0.08% 0.08%
D 38488 34357 346 346 0.90% 1.01%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 13 1177144 1492.77 3859 3775 786.0
A 0 118 108187 132.83 3859 3775 786.0
A 0 50 64716 77.53 3859 3775 786.0
B 14 167 897189 1199.57 3910 3817 744.7
B 4 48 478102 636.84 3910 3817 744.7
B 15 204 348698 463.09 3910 3817 744.7
C 14 48 746051 855.57 3761 3775 867.6
C 9 16 299303 340.63 3761 3775 867.6
C 9 247 146525 164.54 3761 3775 867.6
D 13 235 1833586 2048.26 3714 3603 893.4
D 12 79 433795 481.5 3714 3603 893.4
D 2 136 397016 440.34 3714 3603 893.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter